Instruction manual

Instruction Manual αlpha-pH2000D
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Note: If there is a calibration error, the controller displays “CAL ERR”. If this happens,
push both ▲ or ▼ keys (escape) to restart the calibration beginning from Step 1.
Note: If you stop calibration after entering the first value, or if calibration is
defective, the controller will use its original calibration data.
5.5 View actual zero and slope
ENT
ENT
CAL
pH
CAL
MEAS
P
H
O
C
ATC
1. While in Measurement mode press the CAL key. The display will prompt you to enter a
security code. Leave the security code at “000” (view only mode).
2. Press the ENT key.
The display shows the slope in mV (upper value) and the pH reading at 0 mV (zero point, lower
value).
Note: If no key is pressed for 30 seconds the transmitter automatically returns to
the Measurement mode.
3. Press the ENT key to return to the Measurement mode.